Largest Cities by Watershed- North America

Given a river, can you name the five largest cities that lie in its watershed?
To be in the watershed, water that falls on the city must flow into the river before it reaches the ocean.
Quiz by MiracleMax
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Last updated: November 8, 2020
First submittedNovember 8, 2020
Times taken27
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Columbia
1,849,898
Portland
387,847
Spokane
349,684
Boise
247,421
Eugene
236,632
Salem
 
 
Colorado
3,629,114
Phoenix
1,866,011
Las Vegas
843,168
Tucson
249,400
Nogales
184,400
San Luis Río Colorado
St. Lawrence
8,608,208
Chicago
5,429,524
Toronto
3,797,090
Detroit
3,519,595
Montreal
1,780,673
Cleveland
 
 
Rio Grande
1,460,200
Ciudad Juárez
1,288,000
Monterrey
932,600
Chihuahua
811,500
Saltillo
803,086
El Paso
Mississippi
2,734,203
Denver
2,650,890
Minneapolis
2,150,706
St. Louis
1,733,853
Pittsburgh
1,519,417
Kansas City
 
 
Nelson
1,237,656
Calgary
1,062,643
Edmonton
711,295
Winnipeg
245,181
Saskatoon
214,631
Regina
+1
Level 51
Nov 8, 2020
Great quiz!
+1
Level 84
Nov 10, 2020
Nice quiz.

Thanks to the reversal of the flow of the south branch of the Chicago River, water that falls in Chicago can end up in the Mississippi River.